21results about How to "Easy to integrate applications" patented technology

The invention relates to a traffic flow prediction optimization method based on an intelligent optimization algorithm, which is applied to the technical field of traffic flow prediction. The system comprises a multi-modal data acquisition and fusion module, a hybrid deep learning prediction module, an intelligent parameter optimization module, an integrated learning module, a multi-scale error correction module, a prediction result analysis and visualization module, a distributed learning and privacy protection module and the like. Wherein the hybrid deep learning prediction module adopts an attention mechanism to fuse models such as CNN, Transform and LSTM, and introduces an adaptive error correction mechanism, so that the prediction precision is remarkably improved; the intelligent parameter optimization module accelerates the model search efficiency by using technologies such as quantum computing and swarm intelligence optimization; the integrated learning module and the adversarial training strategy enhance the robustness and generalization of the model; and the multi-scale error correction module adopts a time sequence decomposition and self-adaptive online learning method to improve the accuracy of long-term and short-term prediction.

The invention relates to a satellite navigation baseband processing device optimized by a coprocessor. A core processing part of the device adopts a realization framework of a main processor and a coprocessor; the coprocessor is used for scheduling hardware acceleration computing resources in real time under exchange control of the main processor, and completing high-real-time processing tasks such as signal capture and tracking loop processing of satellite navigation; an instruction set and an external interface of the coprocessor are subjected to targeted optimization, the bus bit width and the internal storage width of the coprocessor are expanded, and the in-situ width of an ALU and a register of the coprocessor is reserved; performing bus data access and storage by adopting an external port access instruction and an internal memory access instruction which are matched with the expanded bus according to the expansion state; and performing access and storage of single register data by adopting a bus write enable, an access instruction and a storage instruction which are matched with the expanded internal storage width. According to the invention, the function load of the main processor is effectively reduced, and the implementation cost of the baseband processing device is reduced.

The invention discloses an application of a self-driven perovskite photoelectric detector in a visible light sensitive chip. The self-driven perovskite photoelectric detector comprises an electrode, a first charge transport layer, a second charge transport layer and a perovskite layer, wherein the perovskite layer is a thin film of an interdigital structure formed by low-dimensional and three-dimensional perovskite, and the low-dimensional perovskite is any one or a combination of more of zero-dimensional perovskite, one-dimensional perovskite and two-dimensional perovskite; the first charge transport layer is one or a combination of a hole transport layer and an electron blocking layer, and the second charge transport layer is one or a combination of an electron transport layer and a hole blocking layer; or the first charge transport layer is one or a combination of more of the electron transport layer and the hole blocking layer, and the second charge transport layer is one or a combination of more of the electron transport layer and the hole blocking layer. According to the perovskite photoelectric detector, the problem of limited application caused by insufficient visible light detection performance of the existing silicon-based and perovskite visible light detectors is solved.

The invention relates to an ultra-wideband flexible transparent ultra-thin metamaterial wave absorber, which solves the problems of low profile, wide bandwidth and insensitive polarization and angle of the wave absorber, and belongs to the field of electromagnetic metamaterials. The antenna comprises a first dielectric layer, a second dielectric layer and a third dielectric layer which are sequentially arranged from bottom to top, the first dielectric layer and the third dielectric layer are PET substrates; the second dielectric layer is a PVC layer; the upper surface of the third dielectric layer is provided with conductive film units which are arranged periodically, and the lower surface of the first dielectric layer is covered with a conductive film. The upper surface of the third dielectric layer is provided with four conductive thin film units which are periodically arranged, and each conductive thin film unit is an ITO resistive thin film with a cross-shaped pattern. According to the invention, the flexible PVC is used as the dielectric substrate, the PET is used as the reflection bottom plate and the resonance layer, and the conductive film pattern of the resonance layer is optimally designed, so that the absorption performance of which the absorption rate is greater than 90% is realized within the frequency range of 12.02-102.91 GHz, and the relative absorption bandwidth can reach 158.1%.

The application provides a kind of to identify batch electronic product average life evaluation method, it is related to the technical field of reliability engineering and life evaluation, solve the technical problem that average life evaluation method in prior art is difficult to accurately evaluate the average life of the batch electronic product.The method comprises establishing a segmented life distribution model, the segmented life distribution model includes a first stage life distribution model and a second stage life distribution model separated by a segmentation point time T, and the segmented life distribution model satisfies the parameter constraint relationship at the segmentation point time T;Wherein, the first stage life distribution model adopts an exponential distribution model with failure rate λ;The second stage life distribution model adopts a Weibull distribution model;Based on the segmented life distribution model, the average life of the batch electronic product is calculated and obtained by applying the average life analytical expression.The application can improve the calculation efficiency and calculation accuracy.

The application discloses a kind of X-ray irradiation discoloration recovery test methods and application of feldspar crystal, it is related to radiation detection and irradiation metrology technical field.Natural colorless transparent feldspar or natural light color transparent feldspar is irradiated with different X-ray radiation dose, its color changes from colorless transparent or light color transparent to gray, and the gray scale is related to irradiation dose;After the color of the feldspar is changed, it is treated at different temperatures, or irradiated with visible light LED, to seek the best recovery parameters to restore its color to the original color.The method of the application can evaluate the discoloration performance of feldspar crystal and seek its best recovery parameters.The discoloration effect of natural colorless or light color transparent feldspar is obvious, easy to observe with naked eye, and the gray scale is related to the irradiation dose, which can also meet the needs of "transparent observation and light protection" in radiation protection scenarios.

This invention provides an over-temperature protection circuit comprising at least: a reference module, an adjustment module, a reference signal generation module, an error amplification module, a constant current module, and a sampling feedback module. The reference module provides a reference voltage and a negative temperature coefficient voltage. The reference signal generation module is connected to the output of the reference module. The adjustment module is connected between the outputs of the reference voltage generation module and the reference module. The error amplification module is connected to the outputs of the feedback signal generation module and the reference signal generation module. The constant current module is connected to the output of the error amplification module. The sampling feedback module is connected to the output of the constant current module. This circuit enables the charging chip to perform temperature protection by linearly reducing the charging current under different temperatures, especially under non-extreme high temperatures, improving charging safety and reducing chip wear. Furthermore, its simple structure makes it suitable for various charging chips and facilitates integrated applications.

The invention provides a photoresist composition based on carbon quantum dots as well as a preparation method and application thereof. The photoresist composition comprises carbon quantum dots, a photosensitizer, an anti-diffusion agent and a photoresist solvent. The particle size of the carbon quantum dot is 2-10nm, and the surface is modified by functional groups. The photosensitizer is alpha-hydroxyethyl phenyl ketone and the like, the anti-diffusion agent is n-amyl alcohol and the like, and the photoresist solvent is an organic solvent such as methylbenzene and the like. The preparation method comprises the step of preparing the carbon quantum dots. The photoresist based on the carbon quantum dots prepared in the invention has higher resolution (up to sub-100nm), good patterning ability and excellent photoelectric properties, can form photoetching patterns through spin coating, exposure, development and other processes, is suitable for ultraviolet, extreme ultraviolet and electron beam photoetching, and can meet various micro-nano processing requirements.

The invention relates to the technical field of CT (Computed Tomography) artifact correction and image processing, in particular to a CT image ring artifact correction method based on detector jitter, which comprises the following steps of: controlling a detector to jitter according to a preset periodic jitter track and acquiring a projection image during scanning; returning the image to a non-jittering state according to the track; carrying out CT reconstruction on the returned image; and performing bilateral filtering on the reconstructed CT image to obtain a corrected image. The jitter trajectory follows a triangular wave function, bilinear interpolation is adopted for return, an FDK algorithm is adopted for reconstruction, and a Gaussian weighting mode combining space and a pixel value domain is adopted for bilateral filtering. According to the method, a ring artifact generation mechanism is broken through physical jitter, edge protective filtering is combined, the image definition is kept while the ring artifacts are effectively removed, and the method has the advantages of being independent of additional correction, free of a large amount of training data and easy and convenient to implement.

The application provides a semiconductor device structure and a preparation method and a radiation direction switching method thereof, and the method comprises a one-dimensional silicon grating, a first phase change layer, a second phase change layer and an isolation layer; a first side surface of a silicon rod is perpendicular to an upper surface, and an included angle between a second side surface and a lower surface is less than 90 degrees; the upper surface of the silicon rod is provided with the first phase change layer, and the lower surface is provided with the second phase change layer; and the isolation layer wraps the silicon rod and fills a gap. The application realizes dynamic adjustable directional radiation by setting the phase change layer and cooperating with the silicon rod with the inclined side surface; in addition, the dynamic directional radiation adjustment is realized by using the structure of the semiconductor device itself, the complexity of the photoelectric structure is reduced, and the integrated application of the optical element is favorable; finally, the switching of the directional radiation by the phase change layer lays a foundation for the application of programmable logic optical paths.

The invention belongs to the technical field of biology, and discloses an algorithm model for predicting the thermal inactivation efficiency of microorganisms in biohazard wastewater and application of the algorithm model, the model monitors the water temperature change through a water temperature probe, and calculates the real-time inactivation efficiency of the microorganisms in the sterilization process based on an integral algorithm. The model is not only used for optimizing the operation process of sterilization equipment and improving the efficiency and safety of the sterilization process, but also can be used for carrying out environmental risk assessment and judgment on wastewater discharge after thermal sterilization.

This application discloses a wing lift-to-drag ratio adjustment device and method, belonging to the field of aircraft aerodynamics design. At least two airflow passing elements are symmetrically arranged on the lower surfaces of the left and right wings of the aircraft, and can switch between a retracted state and an operational state. In the operational state, the airflow passing elements at least partially protrude from the lower wing surface, with at least the surface facing the leading edge being arc-shaped, and their cross-sectional area decreasing along the protrusion direction. This accelerates the local airflow, reduces static pressure, thereby reducing lift, while simultaneously generating form drag to increase overall aircraft drag. A drive mechanism is used to switch the state of the airflow passing elements in response to control commands; a controller is used to generate and send control commands. This application also provides a corresponding adjustment method. This application has a simple structure, low cost, and can flexibly adjust the lift-to-drag ratio according to the landing environment, with minimal impact on the aircraft's pitch moment, making it particularly suitable for long-endurance aircraft without flaps.

The invention discloses an improved C-dump converter energy and signal simultaneous transmission strategy. In order to solve the problem that energy in a follow current stage of a traditional C-dump converter can only be fed back to an excitation power supply and power generation energy output cannot be realized, a follow current loop suitable for a power generation state is constructed by adjusting the connection position of an energy storage capacitor in a circuit, so that the control independence of each phase is maintained and the use of devices is not increased; and effective output of power generation energy is realized. The flyback converter is adopted to widen the voltage output range and reduce the output voltage fluctuation at the same time. In order to realize synchronous transmission of energy and signals, a frequency shift keying modulation method is used, and ripple signals containing communication data are embedded in output voltage; and a receiving end performs information demodulation by using fast Fourier transform, so that an information transmission system is simplified. According to the scheme, the system complexity is remarkably reduced, and the output electric energy quality of the switched reluctance generator is effectively improved.

The invention belongs to the field of electromagnetic environment perception, and provides an ultra-wideband pulse signal detection method based on time stretching. The system is composed of a broadband light source, a single-mode long optical fiber, an electro-optical modulator, a photoelectric detector, a data acquisition card and an industrial personal computer. According to the invention, the method does not depend on a heavy and expensive traditional oscilloscope, utilizes the optical signal dispersion principle to stretch the signal time domain, and achieves the detection and sampling of ultra-wideband pulse signals with narrow time domain pulse width and extremely low duty ratio.

The application discloses an application of a self-driven perovskite photoelectric detector in a visible light photosensitive chip. The self-driven perovskite photoelectric detector comprises electrodes, a first charge transport layer, a second charge transport layer and a perovskite layer; wherein the perovskite layer is a thin film in an interdigital structure formed by low-dimensional and three-dimensional perovskite, and the low-dimensional perovskite is any one or a combination of zero-dimensional, one-dimensional and two-dimensional; the first charge transport layer is one or a combination of a hole transport layer and an electron blocking layer, and the second charge transport layer is one or a combination of an electron transport layer and a hole blocking layer; or the first charge transport layer is one or a combination of an electron transport layer and a hole blocking layer, and the second charge transport layer is one or a combination of an electron transport layer or a hole blocking layer. The perovskite photoelectric detector solves the problem that the application of the existing silicon-based and perovskite visible light detectors is limited due to the insufficient visible light detection performance.

The application provides a multi-channel bidirectional holographic metasurface for orbital angular momentum encryption communication, and belongs to the field of wireless communication and information security, and comprises a feed antenna for generating linearly polarized incident electromagnetic waves, a vortex wave generating metasurface arranged in the radiation direction of the feed antenna and formed by a plurality of polarization selection metasurface units arranged according to an orbital angular momentum phase distribution diagram, and used for converting the linearly polarized electromagnetic waves into vortex electromagnetic waves carrying preset orbital angular momentum modes, and a holographic metasurface arranged in parallel with the vortex wave generating metasurface and formed by a plurality of polarization selection metasurface units arranged according to a holographic amplitude and phase distribution diagram, and used for receiving the vortex electromagnetic waves and reconstructing a holographic image; the holographic metasurface also has bidirectional working capability, and is switched to a forward or reverse working state by being flipped by 180 DEG around a fixed axis, so that the holographic image can be reconstructed under bidirectional incidence. The application realizes safe and high-capacity multi-channel bidirectional holographic encryption imaging in the microwave frequency band.

This invention relates to a microscale six-degree-of-freedom motion measurement method and device based on a light intensity distribution model, belonging to the field of precision optical metrology and micro / nano manipulation. The device includes a laser diode and laser coupler, a multi-core optical fiber, a light-modulated target, a multi-channel photodetector, a data acquisition card, and a processor. The multi-core optical fiber consists of a single transmitting fiber and multiple uniformly surrounding receiving fibers. The light-field distribution modulation target has a spatial geometric reflection structure to break the spatial symmetry of the reflected light path. A forward mathematical model is established to describe the nonlinear functional relationship between the six-degree-of-freedom pose of the light-modulated target and multiple independent optical power signals. The six-degree-of-freedom pose is calculated based on the measured optical power values. This invention effectively overcomes the measurement blind zone of traditional fiber optic sensors while maintaining a simple system structure, small size, strong anti-interference capability, and low cost, achieving synchronous, high-precision, and robust measurement of microscale spatial six-degree-of-freedom displacement.

The application provides a millimeter wave wide-angle scanning integrated antenna array structure, which comprises an antenna array body with a working frequency range of 24-33 GHz, wherein the antenna array body is composed of a plurality of metal claddings in a specific arrangement mode, and the antenna array body further comprises a substrate and a mounting leaf. The side plates arranged on both sides of the antenna unit can mount the antenna unit to the outside of the threaded rod, the antenna unit can be limited through bolts, the connecting plate can be telescoped on the top of the substrate through the telescoping action of the electric telescopic rod, the movable rod mounted on the top of the connecting plate can move up and down, the top plate arranged on the top of the movable rod can extrude the flexible plate, the sliding sleeve arranged on both sides of the flexible plate can slide along the outside of the sliding rod during the force receiving process at the bottom of the flexible plate, the flexible plate can be bent, and the antenna unit can be formed into a convex shape, so that the scanning performance of the antenna array can be continuously improved to meet the use requirement.

The present invention proposes a phononic crystal and a phononic crystal device based on a local resonance type, which solves the problem that the frequency order of magnitude corresponding to the existing phononic crystal is large and is not conducive to practical integrated applications. The phononic crystal includes a plurality of crystal unit cell structures and a first base elastic connection part, each of which is composed of a loss scatterer unit, a gain scatterer unit and a second base elastic connection part. A negative imaginary part and a positive imaginary part are applied to the two scatterer units respectively. The application of the negative imaginary part and the positive imaginary part causes the energy band of the phononic crystal to be degenerate. The frequency at which the dividing point between the energy band degeneration and non-degeneration is located is located in the local resonance band gap. The frequency corresponding to the local resonance band gap is more than one order of magnitude lower than the frequency corresponding to the Bragg band gap. Although the frequency order of magnitude corresponding to the phononic crystal is low, the purpose of "small size controlling large wavelength" can be achieved, which is conducive to practical integrated applications and has high practical value.

The utility model discloses a bipolar attenuator adopting a specifically packaged PIN diode, relates to the technical field of attenuators, and solves the technical problem that a traditional attenuator is difficult to consider both the size and the performance at the same time. The circuit comprises a positive-phase attenuation circuit and a negative-phase attenuation circuit which are vertically symmetrical, the input ends of the positive-phase attenuation circuit and the negative-phase attenuation circuit are electrically connected with a radio-frequency signal input end through a balun, and the output ends of the positive-phase attenuation circuit and the negative-phase attenuation circuit are electrically connected with a radio-frequency signal output end. The positive-phase attenuation circuit is electrically connected with a positive-phase control voltage, the negative-phase attenuation circuit is electrically connected with a negative-phase control voltage, and only one of the positive-phase attenuation circuit and the negative-phase attenuation circuit is conducted during use; according to the utility model, the performance requirement is met, the miniaturization requirement is also met, the application scene is diversified, and the circuit can be effectively protected.

The application relates to a WebGIS-based military symbol plotting system and a plotting method, wherein the system comprises a military symbol library management module, a military symbol plotting module and a situation map storage module; the method comprises the following steps: selecting a military plotting symbol code, determining a plotting type based on the symbol code, superimposing various types of military symbols to generate a situation plotting map, and storing spatial information and attribute information of the plotting situation map; compared with the prior art, the point symbol library of the application supports human-computer interaction plotting, supports mouse interactive operation, simultaneously supports graphic and text visual presentation of attribute information, provides a secondary development military symbol library development package, and is convenient for transplantation between different operating system platforms.